Mountain-Sized Asteroid threat to Earth Every Three Years

In a video posted online Sunday, astrophysicist Vladimir Lipunov says the newly discovered asteroid could collide with Earth during its three-year orbital cycle. A giant meteor exploded over a Russian city in 2013. A Russian astrophysicist says his team has located a huge, mountain-sized asteroid whose orbit crosses the Earth's every three years. Even though … Continue reading Mountain-Sized Asteroid threat to Earth Every Three Years